searchd hangs on stop after FREEZE and FLUSH RAMCHUNK

[sanikolaev]

Bug Description:

If you start Manticore, FREEZE a table, attempt FLUSH RAMCHUNK and try to stop Manticore, it will hang.

MRE:

snikolaev@dev2:~$ mysql -P9315 -h0 -e "drop table if exists t; create table t; freeze t; flush ramchunk t;"
+-------------------+-----------------------------------+
| file              | normalized                        |
+-------------------+-----------------------------------+
| data/t/t.meta     | /home/snikolaev/data/t/t.meta     |
| data/t/t.ram      | /home/snikolaev/data/t/t.ram      |
| data/t/t.settings | /home/snikolaev/data/t/t.settings |
+-------------------+-----------------------------------+
^C^C -- query aborted
^Z
[5]+  Stopped                 mysql -P9315 -h0 -e "drop table if exists t; create table t; freeze t; flush ramchunk t;"

snikolaev@dev2:~$ searchd -c configless.conf --stop
Manticore 6.2.13 9e99cea35@24051504 dev (columnar 2.2.5 0c18998@240424) (knn 2.2.5 0c18998@240424)
Copyright (c) 2001-2016, Andrew Aksyonoff
Copyright (c) 2008-2016, Sphinx Technologies Inc (http://sphinxsearch.com)
Copyright (c) 2017-2024, Manticore Software LTD (https://manticoresearch.com)

[23:07.232] [3565243] WARNING: Error initializing secondary index: daemon requires secondary library v15 (trying to load v14)
[23:07.232] [3565243] using config file '/home/snikolaev/configless.conf' (176 chars)...
[23:07.233] [3565243] stop: successfully sent SIGTERM to pid 3327014

snikolaev@dev2:~$ tail searchd.log
[Wed May 15 09:22:19.856 2024] [3327014] starting daemon version '6.2.13 9e99cea35@24051504 dev (columnar 2.2.5 0c18998@240424) (knn 2.2.5 0c18998@240424)' ...
[Wed May 15 09:22:19.856 2024] [3327014] listening on all interfaces for mysql, port=9315
[Wed May 15 09:22:19.887 2024] [3327021] prereading 0 tables
[Wed May 15 09:22:19.887 2024] [3327014] WARNING: [BUDDY] no SPHINX or HTTP listeners found, disabled
[Wed May 15 09:22:19.888 2024] [3327021] preread 0 tables in 0.001 sec
[Wed May 15 09:22:19.888 2024] [3327014] accepting connections
[Wed May 15 09:22:51.525 2024] [3327035] WARNING: got ident_all
[Wed May 15 09:22:57.044 2024] [3327017] WARNING: got ident_all
[Wed May 15 09:23:07.233 2024] [3327014] caught SIGTERM, shutting down
[Wed May 15 09:23:10.238 2024] [3327014] WARNING: still 1 alive tasks during shutdown, after 3.004 sec

Manticore Search Version:

Manticore 6.2.13 9e99cea35@24051504 dev (columnar 2.2.5 0c18998@240424) (knn 2.2.5 0c18998@240424)

Operating System Version:

Ubuntu Jammy (dev2)

Have you tried the latest development version?

• Yes

Internal Checklist:

^{To be completed by the assignee. Check off tasks that have been completed or are not applicable.}

• Task estimated
• Specification created, reviewed, and approved
• Implementation completed
• Tests developed
• Documentation updated
• Documentation proofread
• Changelog updated